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#$Date: 2016-02-14 16:26:36 +0200 (Sun, 14 Feb 2016) $
#$Revision: 176435 $
#$URL: svn://www.crystallography.net/cod/cif/1/00/03/1000327.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_1000327
loop_
_publ_author_name
'Oyetola, S'
'Verbaere, A'
'Guyomard, D'
'Crosnier, M P'
'Piffard, Y'
'Tournoux, M'
_publ_section_title
;
New ZrP₂O₇-like diphosphates of either mixed
(MIII~1/2~M'V~1/2~) cations (M=Sb,Bi,Nd,Eu;M'=Sb, Nb,Ta) or M'V
cations (M'=Ta,Nb):synthesis and structure
;
_journal_coden_ASTM              EJSCE5
_journal_name_full
;
European Journal of Solid State Inorganic Chemistry
;
_journal_page_first              23
_journal_page_last               36
_journal_volume                  28
_journal_year                    1991
_chemical_formula_structural     '(Bi0.5 Ta0.5) (P2 O7)'
_chemical_formula_sum            'Bi0.5 O7 P2 Ta0.5'
_chemical_name_systematic        'Bismuth tantalum diphosphate (0.5/0.5/1)'
_space_group_IT_number           205
_symmetry_cell_setting           cubic
_symmetry_Int_Tables_number      205
_symmetry_space_group_name_Hall  '-P 2ac 2ab 3'
_symmetry_space_group_name_H-M   'P a -3'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.253(2)
_cell_length_b                   8.253(2)
_cell_length_c                   8.253(2)
_cell_volume                     562.1
_refine_ls_R_factor_all          0.022
_cod_original_formula_sum        'Bi.5 O7 P2 Ta.5'
_cod_database_code               1000327
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
1/2+x,1/2-y,-z
-x,1/2+y,1/2-z
1/2-x,-y,1/2+z
y,z,x
1/2-y,-z,1/2+x
1/2+y,1/2-z,-x
-y,1/2+z,1/2-x
z,x,y
-z,1/2+x,1/2-y
1/2-z,-x,1/2+y
1/2+z,1/2-x,-y
-x,-y,-z
1/2-x,1/2+y,z
x,1/2-y,1/2+z
1/2+x,y,1/2-z
-y,-z,-x
1/2+y,z,1/2-x
1/2-y,1/2+z,x
y,1/2-z,1/2+x
-z,-x,-y
z,1/2-x,1/2+y
1/2+z,x,1/2-y
1/2-z,1/2+x,y
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_symmetry_multiplicity
_atom_site_Wyckoff_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_attached_hydrogens
_atom_site_calc_flag
Bi1 Bi3+ 4 a 0. 0. 0. 0.5 0 d
Ta1 Ta5+ 4 a 0. 0. 0. 0.5 0 d
P1 P5+ 8 c 0.3970(7) 0.3970(7) 0.3970(7) 1. 0 d
O1 O2- 24 d 0.231(2) 0.431(3) 0.448(3) 1. 0 d
O2 O2- 4 b 0.5 0.5 0.5 1. 0 d
loop_
_atom_type_symbol
_atom_type_oxidation_number
Bi3+ 3.000
Ta5+ 5.000
P5+ 5.000
O2- -2.000
